html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.icon-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff7e6;
}

.badge {
  box-sizing: border-box;
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 20px;
  height: 20px;
  padding: 0 4px;
  border-radius: 999px;
  background: #0a4fe8;
  color: #fff7e6;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 11px;
  line-height: 1;
  transform: scale(1);
  transform-origin: center;
  transition: transform 220ms cubic-bezier(0.2, 1.4, 0.4, 1);
}

@media (max-width: 340px) {
  .icon-btn {
    width: 52px;
    height: 52px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .badge {
    transition: none;
  }
}